From the case: Os odontoideum

X-ray
Os odontoideum (f...
Lateral
Os odontoideum (flexion)
Modality: X-ray (Lateral)

- “ Instability of the os odontoideum is demonstrated within the range of  motion. On the extension view the anterior arch of C1 is positioned directl...”

Used in the following article:

  • Os odontoideum - “ Os odontoideum is an anatomic variant of the odontoid process of C2 and needs to be differentiated from persistent ossiculum terminale and from an...”

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